# Diversity of charge orderings in correlated systems.

@article{Kapcia2017DiversityOC, title={Diversity of charge orderings in correlated systems.}, author={Konrad Jerzy Kapcia and Jan Barański and Andrzej Ptok}, journal={Physical review. E}, year={2017}, volume={96 4-1}, pages={ 042104 } }

The phenomenon associated with inhomogeneous distribution of electron density is known as a charge ordering. In this work, we study the zero-bandwidth limit of the extended Hubbard model, which can be considered as a simple effective model of charge ordered insulators. It consists of the on-site interaction U and the intersite density-density interactions W_{1} and W_{2} between nearest neighbors and next-nearest neighbors, respectively. We derived the exact ground state diagrams for different…

## 12 Citations

### Charge Order of Strongly Bounded Electron Pairs on the Triangular Lattice: the Zero-Bandwidth Limit of the Extended Hubbard Model with Strong Onsite Attraction

- PhysicsJournal of Superconductivity and Novel Magnetism
- 2019

The inhomogeneous distribution of charged particles is known as charge-order phenomena. Recent experimental studies of (quasi-) two-dimensional materials found different ordered patterns on the…

### Electronic transport through correlated electron systems with nonhomogeneous charge orderings

- PhysicsPhysical Review B
- 2020

The spinless Falicov-Kimball model exhibits outside the particle-hole symmetric point different stable nonhomogeneous charge orderings. These include the well known charge stripes and a variety of…

### Charge-order on the triangular lattice: Effects of next-nearest-neighbor attraction in finite temperatures

- PhysicsJournal of Magnetism and Magnetic Materials
- 2022

### Order-Disorder Transition in the Half-Filled Two-Component Lattice Fermion Model with Nearest-Neighbor Repulsion

- PhysicsJournal of Superconductivity and Novel Magnetism
- 2020

In this work, we study a model of asymmetric two-component lattice fermion system at half-filling, where particles of both species (distinguishable by, e.g., spin) can interact only via…

### Charge-Order on the Triangular Lattice: A Mean-Field Study for the Lattice S = 1/2 Fermionic Gas

- PhysicsNanomaterials
- 2021

The investigated hamiltonian has a form of the extended Hubbard model in the atomic limit (i.e., the zero-bandwidth limit) and the variational approach is used, which treats the onsite interaction term exactly and the intersite interactions within the mean-field approximation.

### Nonlocal Coulomb interaction and spin-freezing crossover as a route to valence-skipping charge order

- Physicsnpj Quantum Materials
- 2020

Multiorbital systems away from global half-filling host intriguing physical properties promoted by Hund’s coupling. Despite increasing awareness of this regime dubbed Hund’s metal, effect of nonlocal…

### Gapless regime in the charge density wave phase of the finite dimensional Falicov-Kimball model

- PhysicsPhysical Review B
- 2019

The ground-state density of states of the half-filled Falicov-Kimball model contains a charge-density-wave gap. At finite temperature, this gap is not immediately closed, but is rather filled in by…

### Extended Falicov-Kimball model: exact solution for the ground state

- Physics
- 2017

The extended Falicov-Kimball model is analyzed exactly in the ground state at half filling in the limit of large dimensions. In the model the on-site and the intersite density-density interactions…

### Phase separations induced by a trapping potential in one-dimensional fermionic systems as a source of core-shell structures

- PhysicsScientific Reports
- 2019

This work shows a possible occurrence of the core-shell structure in a system with a harmonic trap, containing the BCS and FFLO states and investigates the properties of such structures within an attractive Fermi gas loaded in the optical lattice, in the presence of the trapping potential and their relations to the phase diagram of the homogeneous system.

### Density-wave steady-state phase of dissipative ultracold fermions with nearest-neighbor interactions

- PhysicsPhysical Review B
- 2019

In this work we investigate the effect of local dissipation on the presence of density-wave ordering in spinful fermions with both local and nearest-neighbor interactions as described by the extended…

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